CN219595548U

CN219595548U - Screw-in type intramyocardial perfusion catheter

Info

Publication number: CN219595548U
Application number: CN202220312335.7U
Authority: CN
Inventors: 李金轶; 柯红红
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2023-08-29
Anticipated expiration: 2032-02-16

Abstract

The utility model discloses a screw-in type intramyocardial perfusion catheter, and relates to the technical field of perfusion catheters. The utility model comprises a pushing head, a control handle arranged at one side of the pushing head, a catheter body arranged at the end part of the control handle, and a screwing head arranged at the end part of the catheter body; the screw-in head is of a spiral structure, and a plurality of pouring holes are formed in the peripheral side of the catheter body. The utility model can facilitate the deformation and turning of the catheter body by the control handle through the arranged steel wire, thereby improving the puncture precision of the catheter body, and is convenient for the user to rotate the perfusion catheter through the arranged screwing head, so that the catheter is screwed into the cardiac muscle for fixation, thereby reducing the displacement of the perfusion catheter, and the perfusion catheter can be subjected to the injection of absolute alcohol after being screwed into the ventricular septum cardiac muscle through the plurality of perfusion holes, so that the partial cardiac muscle of hypertrophic obstruction is dehydrated and necrotized, and the accurate and deeper hypertrophic cardiac muscle injury is achieved.

Description

Screw-in type intramyocardial perfusion catheter

Technical Field

The utility model belongs to the technical field of perfusion catheters, and particularly relates to a screw-in type intramyocardial perfusion catheter.

Background

Hypertrophic obstructive cardiomyopathy is a disease which causes obstruction of left outflow tract and blockage of ejection of blood due to abnormal hypertrophy of ventricular septum. The percutaneous endocardial ventricular septum catheter radiofrequency ablation is the latest treatment mode at present, and the percutaneous endocardial ventricular septum catheter radiofrequency ablation catheter is sent into a hypertrophic ventricular septum to ablate through percutaneous puncture of peripheral blood vessels, and hypertrophic myocardial cells are dehydrated, denatured and necrotized through high-frequency electric wave heat generation, so that the aim of eliminating ventricular septum hypertrophy is fulfilled. However, the above-described ablation method has the following disadvantages: 1. the factors such as beating of the heart, rapid blood flow, and pressure difference across the valve cause the ablation catheter to be easily displaced during treatment, with the risk of damaging surrounding normal tissues such as the his bundle. 2. The energy of catheter ablation is not easy to penetrate through hypertrophic myocardial tissue to reach the required damage degree, the ablation is not thorough enough and the ablation range is not enough, so that the effect of relieving the outflow obstruction and the valve-crossing pressure difference after the ablation is not ideal.

Disclosure of Invention

The utility model aims to provide a screwed-in type intramyocardial perfusion catheter, which solves the technical problems that the catheter in the prior art is not easy to puncture and is easy to shift.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

a screw-in type intramyocardial perfusion catheter comprises a pushing head, a control handle arranged on one side of the pushing head, a catheter body arranged at the end part of the control handle, and a screw-in head arranged at the end part of the catheter body;

the screw-in head is the heliciform structure, and a plurality of pouring holes have been seted up to the week side of pipe body, is equipped with two steel wires with the control handle matched with in the pipe body, has seted up the stock solution chamber in the propelling movement head, and the stock solution chamber is linked together with pipe body and a plurality of pouring holes.

Alternatively, the rotational diameter of the screw-in head is 2.5mm.

Optionally, the length of the catheter body is 110cm, and the perfusion holes are uniformly distributed on the circumference of the catheter body and close to one end of the screwing head.

Optionally, the number of the pouring holes is twenty-eight and the length of the pouring holes extending over from the end close to the screwing head to the end far from the screwing head is 4mm.

Optionally, the outer wall circumference of the control handle is wrapped with braided steel wires.

Optionally, an indication mark is arranged on the control handle.

The embodiment of the utility model has the following beneficial effects:

according to the utility model, a user can conveniently deform and turn the catheter body through the control handle by virtue of the arranged steel wire, so that the puncture accuracy of the catheter body is improved, and the user can conveniently rotate the perfusion catheter by virtue of the arranged screwing head, so that the catheter is screwed into the cardiac muscle for fixation, the displacement of the perfusion catheter is reduced, and the perfusion catheter can be subjected to absolute alcohol perfusion after being screwed into the ventricular spaced cardiac muscle by virtue of the arranged plurality of perfusion holes, so that the partial cardiac muscle of hypertrophic obstruction is dehydrated and necrotized, and the accurate and deeper hypertrophic cardiac muscle injury is achieved, so that the outflow obstruction and the valve-crossing pressure difference are lightened.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of an infusion catheter according to an embodiment of the present utility model;

fig. 2 is a schematic view of a catheter body according to an embodiment of the utility model.

Wherein the above figures include the following reference numerals:

a pushing head 1, a control handle 2, a catheter body 3, a screwing head 4, a pouring hole 5 and a steel wire 6.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

In order to keep the following description of the embodiments of the present utility model clear and concise, the detailed description of known functions and known components thereof have been omitted.

Referring to fig. 1-2, in this embodiment, there is provided a screwed-in intramyocardial perfusion catheter, comprising: the pushing head 1, a control handle 2 arranged at one side of the pushing head 1, a catheter body 3 arranged at the end part of the control handle 2, and a screwing head 4 arranged at the end part of the catheter body 3;

the screw-in head 4 is of a spiral structure, a plurality of pouring holes 5 are formed in the peripheral side of the catheter body 3, two steel wires 6 matched with the control handle 2 are arranged in the catheter body 3, a liquid storage cavity is formed in the pushing head 1, and the liquid storage cavity is communicated with the catheter body 3 and the pouring holes 5.

The application of one aspect of the embodiment is: when in use, the perfusion catheter is firstly percutaneously punctured into the right femoral vein and is placed into an 8F vascular long sheath with a valve, the head end of the catheter body is sent into the inferior vena cava through the vascular sheath under X-ray perspective and reaches the right atrium, and the catheter is bent through pushing the control handle 2 to enter the right ventricle. When the screw-in head 4 at the end part of the catheter body 3 faces the room interval vertically, the catheter body 3 is rotated slightly clockwise, meanwhile, the screw-in head 4 can be seen under X-ray perspective to screw in the room interval from the right side to the room interval surface at the left side and be well fixed, then absolute alcohol is connected through the pushing head 1, the absolute alcohol is uniformly poured into the myocardial tissue with partial hypertrophy through the pouring hole 5 at the head end under the action of certain pressure, after a preset ablation amount is reached, the screw-in head 4 can be withdrawn from the myocardium by the rotating catheter body 3 slightly in the reverse clock direction, and the catheter absolute alcohol pouring ablation operation is completed once. The above procedure may be repeated as many times as necessary to ablate in areas of differing hypertrophic chamber spacing. It should be noted that all the electric equipment related in the utility model can be powered by a storage battery or an external power supply.

Through the steel wire 6 that sets up, can be convenient for the user through control handle 2, make catheter body 3 deformation, turn, thereby the precision of catheter body 3 puncture has been improved, through the screw-in head 4 of setting, the user of being convenient for is through rotatory perfusion pipe, thereby the pipe screw in myocardium is interior fixed during, thereby reduce the displacement of perfusion pipe, through a plurality of perfusion holes 5 of setting, can make the perfusion pipe can carry out the pouring of absolute ethyl alcohol after screw in room interval myocardium, make the local myocardial of hypertrophic obstruction take place dehydration, necrosis, reach accurate and the hypertrophic myocardial damage of deeper level, thereby alleviate outflow obstruction and stride lamella pressure difference.

The rotation diameter of the screw-in head 4 of this embodiment is 2.5mm; the length of the catheter body 3 is 110cm, and the pouring holes 5 are uniformly distributed on the circumference of the catheter body 3 and are close to one end of the screwing head 4.

The number of pouring holes 5 of the present embodiment is twenty-eight and the length of the pouring holes 5 extending over from the end near the screwing head 4 to the end far from the screwing head 4 is 4mm.

The outer wall circumference of the control handle of the embodiment is wrapped with braided steel wires. The friction force during holding can be improved through the braided steel wire, and the patient is prevented from being injured due to slipping.

The control handle of the embodiment is provided with an indication mark. Through the indicating mark that sets up, can be used for instructing the number of rotations, the number of rotations of convenience of customers record.

Specifically, the control method for controlling the steel wire 4 by the control handle is the same as the control mode and principle of a controllable myocardial biopsy forceps disclosed as CN111991037A in the prior art.

The above embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Claims

1. A screw-in intramyocardial perfusion catheter, comprising: the pushing head (1), a control handle (2) arranged at one side of the pushing head (1), a catheter body (3) arranged at the end part of the control handle (2), and a screwing head (4) arranged at the end part of the catheter body (3); the screw-in head (4) is of a spiral structure, a plurality of pouring holes (5) are formed in the peripheral side of the catheter body (3), two steel wires (6) matched with the control handle (2) are arranged in the catheter body (3), a liquid storage cavity is formed in the pushing head (1), and the liquid storage cavity is communicated with the catheter body (3) and the pouring holes (5).

2. A screwed-in intramyocardial perfusion catheter according to claim 1, characterized in that the rotation diameter of the screwing-in head (4) is 2.5mm.

3. A screwed-in intramyocardial infusion catheter according to claim 1, characterized in that the length of the catheter body (3) is 110cm, and the infusion holes (5) are uniformly distributed on the circumference of the catheter body (3) and near one end of the screwed-in head (4).

4. A screw-in intramyocardial infusion catheter according to claim 3, characterised in that the number of infusion holes (5) is twenty eight and that the length of the infusion holes (5) is 4mm throughout from the end close to the screw-in head (4) to the end remote from the screw-in head (4).

5. A screw-in intramyocardial infusion catheter according to claim 1, wherein the peripheral side of the outer wall of the control handle is wrapped with braided wires.

6. A screw-in intramyocardial perfusion catheter as in claim 1 wherein the control handle is provided with an indicator.